71825563478 has 32 divisors (see below), whose sum is σ = 112728692736. Its totient is φ = 34257994848.

The previous prime is 71825563477. The next prime is 71825563573. The reversal of 71825563478 is 87436552817.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71825563471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45372275 + ... + 45373857.

It is an arithmetic number, because the mean of its divisors is an integer number (3522771648).

Almost surely, 2^71825563478 is an apocalyptic number.

71825563478 is a deficient number, since it is larger than the sum of its proper divisors (40903129258).

71825563478 is a wasteful number, since it uses less digits than its factorization.

71825563478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3668.

The product of its digits is 11289600, while the sum is 56.

The spelling of 71825563478 in words is "seventy-one billion, eight hundred twenty-five million, five hundred sixty-three thousand, four hundred seventy-eight".